On Thu, 30 Aug 2018 12:27:12 -0400
Bob kb8tq <kb...@n1k.org> wrote:
> WWVB as transmitted ( = right at the input to the antenna) is a wonderfully
> stable signal. As soon as
> that signal hits the real world things start to degrade. Propagation between
> transmit and receive sites
> is a big deal, even at 60 KHz. On top of that, there is a *lot* of manmade
> noise at 60 KHz. The receive
> signal to noise will never be as good as you might like it to be ….
I don't know about WWVB, but for DCF77 it's known that sunrise/sunset
causes a phase shift of several 100µs at even moderate distances
(like ~500km). Unfortunately I don't have any measurements at hand.
Attila Kinali
--
It is upon moral qualities that a society is ultimately founded. All
the prosperity and technological sophistication in the world is of no
use without that foundation.
-- Miss Matheson, The Diamond Age, Neal Stephenson
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